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Change identifer of stderr to se #368

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merged 3 commits into from May 3, 2018
Merged

Change identifer of stderr to se #368

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9493395
Change identifer of stderr to stderror(#369)
yukota Apr 8, 2018
7e8fe39
Fix 0.7 failure
nalimilan Apr 16, 2018
cf91012
Stop exporting stderr
nalimilan Apr 16, 2018
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2 changes: 1 addition & 1 deletion docs/src/statmodels.md
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Expand Up @@ -27,7 +27,7 @@ nulldeviance
r2
rss
score
stderr
stderror
vcov
weights(::StatisticalModel)
```
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2 changes: 1 addition & 1 deletion src/StatsBase.jl
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Expand Up @@ -180,7 +180,7 @@ module StatsBase
nullloglikelihood,
rss,
score,
stderr,
stderror,
vcov,
predict,
predict!,
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10 changes: 9 additions & 1 deletion src/deprecates.jl
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Expand Up @@ -20,6 +20,15 @@ import Base.varm, Base.stdm
@deprecate AICc(obj::StatisticalModel) aicc(obj)
@deprecate BIC(obj::StatisticalModel) bic(obj)

if !isdefined(Base, :stderr)
@deprecate stderr(obj::StatisticalModel) stderror(obj)
else
function (io::typeof(stderr))(obj::StatisticalModel)
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The problem with this is that typeof(stderr) can change at runtime if redirect_stderr is called.

So this should just be ::IO to catch all usages. I don't think it is a problem to have a fairly general method here as a temporary deprecation since it continues to throw a MethodError for non-stderr objects. (People are unlikely to pass StatisticalModel objects to random IO objects by accident anyway.)

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I changed ::IO because it doesn't work on 0.7. I'm not sure we should care about supporting that deprecation after calling redirect_stderr... Anyway I don't have any solution to suggest.

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Why doesn't IO work? On 0.7 (unless something has changed very recently), typeof(stderr) is TTY, which is a subtype of IO.

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I'm not sure we should care about supporting that deprecation after calling redirect_stderr

This would mean that the deprecation wouldn't work in IJulia, for example.

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Because of JuliaLang/julia#14919:

julia> (io::IO)() = 1
ERROR: cannot add methods to an abstract type

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I see… yes, I can't think of a way to make it work for IJulia (without adding an IJulia dependency), since IJulia redirects to its own IO type.

Base.depwarn("stderr(obj::StatisticalModel) is deprecated, use stderror(obj) instead", :stderr)
io === stderr ? stderror(obj) : throw(MethodErrror(io, (obj,)))
end
end

@deprecate R2(obj::StatisticalModel, variant::Symbol) r2(obj, variant)
@deprecate R²(obj::StatisticalModel, variant::Symbol) r²(obj, variant)
@deprecate adjR2(obj::StatisticalModel, variant::Symbol) adjr2(obj, variant)
Expand All @@ -38,7 +47,6 @@ function findat!(r::IntegerArray, a::AbstractArray{T}, b::AbstractArray{T}) wher
return r
end


"""
findat(a, b)

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4 changes: 2 additions & 2 deletions src/statmodels.jl
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Expand Up @@ -118,11 +118,11 @@ informationmatrix(model::StatisticalModel; expected::Bool = true) =
error("informationmatrix is not defined for $(typeof(obj)).")

"""
stderr(obj::StatisticalModel)
stderror(obj::StatisticalModel)

Return the standard errors for the coefficients of the model.
"""
stderr(obj::StatisticalModel) = sqrt.(diag(vcov(obj)))
stderror(obj::StatisticalModel) = sqrt.(diag(vcov(obj)))

"""
vcov(obj::StatisticalModel)
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4 changes: 2 additions & 2 deletions test/statmodels.jl
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Expand Up @@ -17,9 +17,9 @@ x2 0.368314 Great -90 <1e-4
x3 0.344454 Bad -80 <1e-4
"""

@test sprint(show, CoefTable(m, ["Estimate", "Stderr", "df", "p"],
@test sprint(show, CoefTable(m, ["Estimate", "Stderror", "df", "p"],
["x1", "x2", "x3"], 4)) == """
Estimate Stderr df p
Estimate Stderror df p
x1 0.819778 0.844007 0.923676 0.1717
x2 0.669931 0.67919 0.066098 0.4204
x3 0.453058 0.72525 0.999172 0.5567
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